EFFECTS OF CONTRALATERAL ACOUSTIC STIMULATION ON SPONTANEOUS OTOACOUSTIC EMISSIONS
EFFECTS OF CONTRALATERAL ACOUSTIC STIMULATION ON SPONTANEOUS OTOACOUSTIC EMISSIONS
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DOI：
10.1121/1.407349
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发表时间：
1993-11-01
影响因子：
2.4
通讯作者：
BURNS, EM
中科院分区：
文献类型：
--
作者：
HARRISON, WA;BURNS, EM
在对侧耳进行音调和宽带刺激之前、期间和之后，测量了成年人耳道中的自发耳声发射（soae）。音调以相对于SOAE的十个频率的固定水平呈现。宽带噪声呈现为8个级别，从6到76 dB SPL。在某些音调条件下，在某些受试者中观察到SOAE频率和幅度的变化。频移总是正的，而幅移是可变的。没有看到明显的调谐模式，因此与soae具有特定频率关系的音调会引起soae的更大变化。观察到所有受试者宽带噪声水平的增加导致soae频率和幅度的系统性变化。结果讨论了导致soae改变的可能机制：经颅传导；耳蜗系统；和/或中耳反射弧。
Spontaneous otoacoustic emissions (SOAEs) were measured in the ear canal of adult humans prior to, during, and following presentation of tonal and broadband stimuli to the contralateral ear. Tones were presented at a fixed level at ten frequencies relative to the SOAE. Broadband noise was presented at eight levels, from 6 to 76 dB SPL. Shifts in SOAE frequency and amplitude were observed for some subjects, for some tone conditions. Frequency shifts were always positive, whereas amplitude shifts were variable. No apparent pattern of tuning was seen, such that tones with a particular frequency relationship to the SOAEs induced greater changes in the SOAEs. Systematic changes in frequency and amplitude of SOAEs were observed for increasing level of broadband noise for all subjects. Results are discussed with respect to possible mechanism(s) responsible for the alterations in SOAEs: Transcranial conduction; the olivocochlear system; and/or the middle-ear reflex arc.